Every morning when i first start my 04 Z lately i have been hearing a weird noise when ever i turn the wheel for about the first 15 minutes??? i dont know what its from and i think it might be something with the power steering pump or fluid? idk any ideas might help. cant describe the noise though kind of like the whole steering system is just over working itself or something. and i dont want to go into a nissan dealer yet bc it only happens on initial start up. and b the time i got to the dealership it would have gone away.